Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc253b4bcb5e9ef…

MALICIOUS

PDF

93.4 KB
MD5: 9e2484a1782ec0586f8c88434dbf59de SHA-1: c59d1afad52b0db59dc8d59ce102015b9c89f9b1 SHA-256: ddc253b4bcb5e9ef5279582aa2c9875b5ff399710e8b4746d53710a74a00f2c9
178 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by multiple high-confidence heuristics, including ML and ClamAV, indicating it contains an exploit. The presence of an XFA form and an embedded script payload strongly suggests an attack vector designed to execute malicious code. The embedded artifact, 'embedded_pdf_script_00000246.bin', likely contains the exploit or downloader, though its specific function cannot be determined without further analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000246.bin
6618f0638e31f5320668a092ecd860de5add1c5efa7d6129579ed1c4f9f45499		 pdf-embedded-script PDF raw stream script payload at offset 0x246 94924 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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